Gauge



06f. 16, 1945. W H. TROEDSON 2,387,218

` GAUGE Filed Nov. 5, 1945 Patented Oct. 16, 1945 UNITED STATES GAUGE Y Waldemar Troedson, Chicago; Ill., assigner to Crane Co., Chicago; Ill., a corporation oE-Illi-r Application November 5, 1943', Serial No.. 509,110"

3 Claims'.

This invention relates to gauges. and isA morel particularly concernedv withl gaugesr of the adjustable type adapted for use in gauging work of varioussizesand shapes, and is to be distinguished,

, asdesired, by merely varying the sizes or relative position ofv the several parts constituting the structure. Gauges of this type are: particularly usefulr for accurately checking critical dimensions on those parts manufactured in relatively small quantities, wherein the cost of Amaking or buying special gauges would be excessive, as the gauge during its course of normal use may be initially set at the go dimension and then subsequently at the not go dimension.

This invention further contemplates the provision of an adjustable gauge embodying improvements in means for rst setting same approximately at the predetermined size, and other means for more accurately adjusting the gauge to the desired size.

Another object of this invention resides in the provision of a pair of conveniently adjustable work-engaging members detachably mounted and interchangeable with other types and forms of work-engaging members, thereby extending the usefulness of the gauge to the checking ofvarious sizes and forms of male threads, outside diameters, inside diameters, male and female dovetail members, etc.

A further object of this invention resides lin the provision of improved means for moving one of the Work-engaging members to an approximate predetermined position with respect to the other Work-engaging member and then securing same against movement relative thereto.

A further object of this invention resides in the provision of a gauge which is simple to adjust for gauging a predetermined size or form, inexpensive in construction, and which will not readily get out of adjustment or order when in use.

The invention embodies other novel features, details of construction and arrangements of parts which are hereinafter set forth in the specification and claims and illustrated in the accompanying drawing, forming part thereof, wherein:

1 is a; plan view showing an adjustable gauge embodying features of this invention. Fig.Y 2l is@ a side elevational. View ot same.

Fig. 3; is. a sectional View taken along the line Fig.. 4 is a sectional view taken. along the. linel 3 4 of Fig.. l.

Figt isadetail-.sectional-view showing a modified form of work-engaging. member adapted for .use onthe gauge in check-ing dovetail constructions or the like.

Referring now tothe drawing: for a better un-l dersta'nding of thisinvention, a bod-y II is preferably formed with flat, parallel top and bottom surfaces I2 and I3 respectively, andf rounded ends which are` preferably knurled at l 4-` fonhan'- dling. Acircular opening |61 'having ai taper seat I1 is formed in the body to receive a turntable I8 having a taper seat portion I9 for engagement' with the seat Il. A gear 2| is secured to the inner side of the turntable member by means of screws 22, and a spacer ring 23 is provided between the gear and the bottom of the opening I 6. A locking screw 24 extends through an axially disposed aperture 26 formed in the turntable for threaded engagement in the body at 21. A circular groove 28 is formed in the body and is concentric with the axis of the turntable to receive a helical compression spring 29, the latter member functioning to yieldably resist the seating movement of the turntable I8. A post 3l is secured in an aperture 32 provided in the Iturntable by a nut 33 to receive a work-engaging member 34 (hereinafter referred to as the opposing work-engaging member) for rotational movement thereon. The member 34 is held against axial displacement from the post by a scrw 36 threaded into the end of the post.

An aperture 31 is provided in the body to receive the threaded end 38 of a post 39 which is held against movement therein by a nut 4I The opposite end of the post is formed to serve as a journal at 42 for a work-engaging member 43 (hereinafter referred to as the primary workengaging member) and has its axis offset from the axis of the end 38 to provide an eccentric adjustment for the member 43. The nut 4I and the threaded end 38 of the post are slotted at 44 and 45 respectively to receive ascrew driver or' other adjustment tool (not shown) for reasons hereinafter explained. A screw 46 is threaded into the end 42 of the post to hold the member 4 3 against displacement therefrom.

A pinion shaft 41 is journaled in the body at 48 and in a nut 49 as shown at 5|. The nut is threaded into the body at 52 by means of a tool engaging in spanner holes 53. The shaft is slotted at 54 to receive a screw driver and has a square portion 56 to engage a pinion 5l for engagement with the gear 2|.

In Figs. 1 to 4, the work-engaging members 34 and 43 are shown in cylindrical form and provided with annular grooves 58 forvgaugingthrea'ded parts. fIn Fig. 5 the ,work-engaging member 59 is formed in a frusto-conical conguration lll disposed radially from the axis thereof, and comfor the gauging of dovetail parts or the like. plemental tapered seating surfaces formed on the In the use of a gauge of this type, the workbase and turntable for sliding engagement.

engaging members are preferably spaced at apre- 2. A gauge comprising a base, a primary workdetermined setting by first loosening the screw engaging member mounted on the base, a turn- 24 holding the turntable, then turning the pinion 15 table Ajournaled on the base, an opposing workshaft v4l by means of a tool such as a screw engaging membermounted on the turntable and driver engaging in the slot,5 4 ntherebycausing i disposed radially from the axis thereof, and comthe pinion 5l to act through'the gear 2| toro plemental tapered seating surfaces'formed on the tate the turntable and to move the opposing workj base and turntable for sliding engagement. and engagingmember 3 4 into approximate predeter- A20 means for securing the turntable against move mined spaced relation with the primary work-enmentrelativeto the base. y Y gaging member 43. The screw 24 is then turned 3. -A gauge comprising a base,` a primaryV workto move the turntable seat I9 into tight engageengaging member mounted on the base, a turnment with the body seat Hand preferably with table journaled on the base, screw means for re'- the face of the turntable flush with-the face |12 25 taining the said turntable and base adjustably of the body. The'spacing-ring l23`is `provided to insure axial alignment of the: opposing work-V engaging member 34-with the primary work-engaging member 43'when the turntable is secured in seated position.`A If a closer adjustment is de sired between the work-engagingfmembers, they nut 4| is loosened to permit rotation of the post 39 and desired arcuate movement of the primary work-engaging member 43 about the axis of the post'portion 38.. 1 i l Y y While the invention has-been shown in but two forms it is obvious fto those skilled in the art that it is not so limited but is susceptible of various changes and modifications without departing from the spirit thereof or the .appended claims.

I claim:

1. A gauge comprising a base, a primary workengaging member mounted on the base, a turntable journaled. on the base, an opposing work.- engaging member mounted on the turntable and in engagement, an opposing work-engaging member mounted on the turntable and disposed radially from the axis thereof, and means for rotating the turntable for moving the opposing f Work-engaging member to a predetermined ad' justment position, the said base and turntable having tapered seating'surfaces for slidable engagement therebetween, andispring means interposed between the turntable and the base for yieldably resisting an inward or vseating movement of the turntable. 1

' WALDEMAR H. TROEDSON. 

